package cn.edu.scau.cmi.chenjia.chapter5;

class B{
	int x=100,y=200;
	public void setX(int x) {
		x=x;
	}
	public void setY(int y) {
		this.y=y;
	}
	public int getXYSum() {
		return x+y;
	}
}

public class AA {
		public static void main(String args[]) {
			B  b=new B();
			b.setX(-100);
			b.setY(-200);
			System.out.println("sum="+b.getXYSum());
		}
}
